Originally Posted by Jon S
the 876/906 uses the HQV video processor... the HDMI board is a LOT more complex and expensive compared to the other models. I have asked if anyone has done any mods to see if they got it working but no response/luck.... guess it's because not many of the 876/906s were sold compared to the cheaper models...
After doing tons of research, I just managed to SUCCESSFULLY repair my TX-SR876 HDMI issues by applying the method and techniques discussed in this thread. I learned of the success people had repairing the 606 by replacing the 100uf caps, which appeared to be identical to the ones utilized on the 876 board. However, I could not find an example where someone had actually tried it on their 876. I figured I had nothing to lose by trying, since the HDMI inputs were all but useless. I had to wait 30 minutes before the receiver would recognize an HDMI signal. Most of the time i simply received a "NO SIGNAL" message.
There are 13 of the same 100uf 4V caps on the 876 HDMI board. 5 on the top and 8 on the bottom side.
I replaced each of the 100uf 4V capacitors with high-temp 100uF 16V caps I purchased from parts express.
After reinstalling the board and crossing my fingers, low and behold, SUCCESS! HDMI sync and switching works just like the day I bought the receiver. SO happy.